The E25 Turboconcept car was built by BMW as a celebration for the 1972 Summer Olympics in Munich. It was designed by Paul Bracq, with gullwing doors and was based on a modified 2002 chassis with a mid-mounted engine. The Turbo featured foam filled front and rear sections to absorb impact, side impact beams, a braking distance monitor utilizing radar, and a futuristic cockpit. The car was powered by a turbocharged variant of BMW's 2 liter four cylinder M10 engine, developing 276 hp, and was designed to reach a top speed of 155 mph.Only two were ever built. BMW later used the Turbo's design themes on the M1, the 8-Series, the Z1 and the 2008 M1 Homage Concept.